[swaghauler]

The shotgun round is essentially a .410 loading like our own but with a 2 3/4 shell instead of a 2.5" like we use. This is a common caliber for civilian and police work and appears in the SAIGA too. The Russians split their shot into two major sizes. The larger shot appears to be roughly analogous to our newly introduced 0000 Buck loading as it is just slightly bigger than 000. The other loading that the Russians love is #4 Buckshot. In this .410 type loading, they can get 10 pellets in a hull. The larger 0000 type pellet would fit 3 pellets in a hull of this size.

In the SAIGA 12 gauge, the #4 can muster the same 27 pellets as we do in our own 12 gauges. In the TOS-23, you can easily get 60 pellets in the hull.

Under my system, I divide the pellet count by 5 for #4 Buckshot to derive the number of Damage Dice so you would have...

Short Range = 1 To Hit roll at an AVERAGE chance for 2D6 Damage.
Medium Range = 2 To Hit rolls at an AVERAGE chance (with a +1 to each roll for pellet spread) with each hit doing 1D6.
Long Range = 1 To Hit roll at a DIFFICULT chance (with a +1 to the roll for pellet spread) with that hit doing 1D6.
Extreme Range = 1 To Hit roll at a FORMIDABLE chance with that hit doing 1D6.

IF you did a 3-pellet 0000 loading (similar to the US 3-pellet 000 2.5" defensive loading that came out for the Taurus Judge), You would get...

Short Range = 1 To Hit roll at an AVERAGE chance for 3D6+6 Damage to a single location (I actually use 3D8 for the new 0000 Buck).
Medium Range = 3 To Hit rolls (all upper or lower body) for an AVERAGE chance to hit doing 1D8 per hit (or 1D6+2)
Long Range = 2 To Hit rolls (whole-body) for a DIFFICULT chance to hit doing 1D8 per hit.
Extreme Range = 1 To Hit roll for a FORMIDABLE chance to hit, doing 1D8 per hit.